<style>
  div {
    width: 10px;
    height: 10px;
    background-color: #d64203;
  }
</style>

<body>
  <div style="width: 50vw"></div>
  <div style="height: 25vh"></div>
  <div style="width: 35vmin"></div>
  <div style="height: 25vmax"></div>
</body>
